# Fatigue Test TalTech vs CFS Tracker

The clearest difference is in-app purchases: Fatigue Test TalTech at none against CFS Tracker's 16. Fatigue Test TalTech also leads on update cadence (weekly vs every 8 months). CFS Tracker's advantage is device support (4 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. CFS Tracker sells 16 in-app purchases, starting at $4.95 per month. Fatigue Test TalTech asks for nothing beyond the download.

Fatigue Test TalTech ships an update weekly, CFS Tracker every 8 months. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Fatigue Test TalTech | CFS Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/cfs-tracker/id6743564981/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 8 months |
| Monetization | — | Free with in-app purchases |
| Size | 21 MB | 219 MB |
| Requires iOS | 16.2 | **15.5** |
| Devices | iPhone | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | +4 |
| Developer | [Tallinn Tehnikaulikool](https://appshunter.io/developer/1472331275) | [Digital Therapeutics](https://appshunter.io/developer/1721663167) |

## What reviewers say

### Fatigue Test TalTech

[App page](https://appshunter.io/ios/app/fatigue-test-taltech/id6449683047)

**Features:** macOS Compatibility

**In-app purchases:** none


### CFS Tracker

[App page](https://appshunter.io/ios/app/cfs-tracker/id6743564981)

This app helps individuals manage energy-limiting chronic illnesses by tracking symptoms, pacing, medications, and daily activities. It provides insights into patterns and trends to better understand health and communicate with healthcare providers.

**Highlights:** Log diverse symptoms including fatigue and brain fog, Track medications, supplements, and treatments, Record activity, rest, sleep, and nutrition, Customize tracking for personal health patterns, Set reminders for health routines, Monitor post-exertional malaise (PEM) and crashes, Review symptom trends with charts and summaries

**Features:** macOS Compatibility, Siri integration, Apple Watch app, iMessage stickers, Vision Pro support

**In-app purchases (16)**

| Purchase | Price | Billing |
| --- | --- | --- |
| flex pass | $4.95 | per month |
| easy pass | $5.99 | per 7 days |
| flex pass | $8.99 | per month |
| carey ai max | $19.99 | per month |
| yearly access | $19.99 | per year |
| smart pass | $24.99 | per year |
| carey ai ultra | $29.99 | per month |
| plus | $29.99 | per year |
| limited discount | $29.99 | per year |
| Premium Yearly | $34.99 | per year |
| yearly access | $39.99 | per year |
| Extended Trial | $39.99 | per year |
| 7-Day Trial | $49.99 | per year |
| store credit | $1.99 | one-time |
| carey ai credits | $8.99 | one-time |
| lifetime upgrade | $99.99 | one-time |


## Frequently asked questions

### Is Fatigue Test TalTech free?

Fatigue Test TalTech is free to download, with no in-app purchases.

### Is CFS Tracker free?

CFS Tracker is free to download, with in-app purchases available.

### Do Fatigue Test TalTech or CFS Tracker have ads?

Neither Fatigue Test TalTech nor CFS Tracker shows ads.

### Which is updated more often, Fatigue Test TalTech or CFS Tracker?

Fatigue Test TalTech ships an update weekly, and CFS Tracker every 8 months. Most recently, Fatigue Test TalTech was updated on October 27, 2026 and CFS Tracker on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*